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Symbols and software version

Symbols used in these instructions

Prohibition symbol

Failure to observe instructions marked with a prohibition symbol
may result in serious or fatal injury.

Danger symbol

Failure to observe instructions marked with a danger symbol
may result in personal injury and/or damage to the unit.

Software version

This manual applies from the following version:
AHUC: 3.11.1.0
HMI: 3.11.0.0

3005167-2022-02-02

Symbols and software version

5/108

Содержание EXact2 VEX240 series

Страница 1: ...r VEX240 250 260 270 280 series EXHAUSTO OK EXHAUSTO Esc OK Original instructions 3005167 2022 02 02 EXact2 VEX240 280 EXHAUSTO A S Odensevej 76 5550 Langeskov Denmark Tel 45 65 66 12 34 Fax 45 65 66...

Страница 2: ...Air temperature Airflows MC parameters Temp reg units Pressure Heating coil Cooling unit CU cooling unit MXCU CCW Timers CO2 RH sensors 3 Settings Unit Configuration General Accessories BMS Web server...

Страница 3: ...Menu 3 1 1 1 x Temperature set point 26 Menu 3 1 1 1 x Absolute Relative temperature 27 Menu 3 1 1 1 x Cooling relative start 27 Menu 3 1 1 1 x Heating relative start 27 Menu 3 1 1 1 x Cooling absolut...

Страница 4: ...11 External cooling heating pump unit MXHP 54 Menu 2 12 Hour meters 55 Menu 2 13 CO2 RH sensors if mounted 55 Menu 6 Versions 55 Menu 8 Service 56 Auxiliary service panel 57 Menu 8 2 VDI 6022 58 Menu...

Страница 5: ...n symbol may result in serious or fatal injury Danger symbol Failure to observe instructions marked with a danger symbol may result in personal injury and or damage to the unit Software version Softwa...

Страница 6: ...K RD12248 01 Display Browse menu or set value Activate menu confirm key Browse menu or set value If the front cover is extended push it back in The extra keys are for service tech nician use only EXHA...

Страница 7: ...temperature shown in C Setpoint for ventilation shown as percentage 0 no ventilation OFF Unit is switched off timer operation cannot start up unit BMS or Web server controlled system overrides the OFF...

Страница 8: ...e No communication on the external BUS or communication between the VEX CX and HMI is disconnected Fire Fire alarm Closed circuit open and the pre set fire alarm function acti vated Loading Linux Star...

Страница 9: ...ready for every day use HMI panel ready for service mode A Display B key C key D key E key F key G key H Service key cover 2 1 1 Using keys within the menus Keys Used for Navigation and setting values...

Страница 10: ...d for normal service tasks The code for specialist mode is 3142 full ac cess to all menus NB incorrect settings wrong val ues may have a negative impact on unit operation in some menus Password 1111 3...

Страница 11: ...ng to a weekly plan when servicing begins there is a risk that the program may be changed by timer operation and re start the VEX unit 21 0 C 29 05 2009 14 32 Log on to technician menu using pass word...

Страница 12: ...board Refer to the section on the terminal board in the Electrical Installation Guide 2 3 1 Auxiliary service panel If the HMI panel is located far from the VEX CX it is recommended that an auxiliary...

Страница 13: ...ettings 2 Select General 3 Select the required language in line 2 Language 4 Return to the main menu and select yes in Save settings Menu 3 2 1 Setting date and time Unit General Configuration Accesso...

Страница 14: ...B names Menu 3 6 Web server Contact the network administrator for information on the correct IP address etc If the admin password is lost it can be reset to the factory setting But note that this cann...

Страница 15: ...this ex ample backup_20110918 file Backup via web server Follow the backup restore instructions in the web server guide The backup file may be saved on any medium USB PC etc A backup file saved via t...

Страница 16: ...mmissioning Step Action Menu 1 Configure any external accessories or units heating or cooling coils chiller sensors etc 3 4 2 Select operating mode Manual operation is the recom mended setting during...

Страница 17: ...enu 3 1 2 2 Hu midity compensation 5 Go to menu 4 5 Current list and check whether any units from the configuration menu are reporting errors Alarm icon is shown in the menu bar 6 If a unit is reporti...

Страница 18: ...nger See section on de icing on following pages where the VEX type and asso ciated de icing methods are described Heating unit Options IHCW set at the factory for the the EXact2 main board if the VEX...

Страница 19: ...ed at 10 minutes and cannot be changed TS Activation of external tempera ture sensor and selection of type Options TS DUCT TS ROOM None CO2 Activation of CO2 sensor Op tions BMS CO2B sensor connected...

Страница 20: ...IP Configuration Configuration of Modbus and BACnet MSTP BMS configuration See detailed description in the instructions for the protocols 3 2 What is an indoor air quality level Example 3 1 1 1 1 Comf...

Страница 21: ...l The current indoor air quality level can be controlled in five ways Via a weekly plan based on the given operating requirements Set via HMI pan el via an HMI panel in the room via sensor s placed in...

Страница 22: ...abs start Heat rel start Heat abs start 60 80 21 0 Relativ 1 0 1 0 c K K 21 60 C 29 05 2009 14 32 Menu 3 1 1 Operating settings Air regulation 3 1 1 Operating settings IAQ levels Air reg Temp reg Bal...

Страница 23: ...lation of ex tract air 3 Constant pressure regulated extract air with fixed supply air setting Requirements MPT DUCT negative pressure sensor in the extract air duct Available as an accessory Extract...

Страница 24: ...Pa 1 00 Constant pressure reg ulation of both extract air and sup ply air 7 Constant pressure regulation of both extract air and supply air Requirements MPT DUCT negative pressure sensor in the extrac...

Страница 25: ...flow required Maximum airflow required Example of balance The examples show a unit with manual fan control and balances of 0 80 and 1 20 respectively Range The required airflow is A outside the unit s...

Страница 26: ...K K 3 1 1 1 3 Economy Air setpoint Air setpoint cool Temp setpoint Abs Rel Cool rel start Cool abs start Heat rel start Heat abs start 60 80 21 0 Relativ 1 0 1 0 c K K 3 1 1 1 4 Manual Air setpoint A...

Страница 27: ...a comfortable indoor climate High value wider temperature regulation range which provides cooling energy savings Lower and upper limit is shown in the display Example If the required room temperature...

Страница 28: ...f Heating abs start is set to 18 C the heating coil will not start to operate until the temperature falls below 18 C even though the daily user has set the required room temperature to 21 C Generally...

Страница 29: ...ply air regula tion supply air temperature Supply air temperature will never be higher than Maximum or low er than Minimum room tempera ture regulation extract air temperature or TSROOM However supply...

Страница 30: ...point can never be set closer to Heating abs start or Cooling abs start than 0 5 K Heating abs start and Cooling abs start can never be set closer to each other than 1 K If the following will be adjus...

Страница 31: ...usted Maximum room temp is set to a val ue lower than Cooling abs start Cooling abs start will automatically reduce to the same value as Maximum room temp Cooling abs start is set to a value lower tha...

Страница 32: ...than Temp setpoint 0 5K Heating rel start automatically ad justed to Minimum supply air temp Temp setpoint Minimum supply air temp is set to a value higher than Temp setpoint Heating rel start and les...

Страница 33: ...Example 2 Minimum and Maximum supply air temp limit Cooling rel start and Heating rel start 3005167 2022 02 02 Starting up the unit for operation 33 108...

Страница 34: ...greater than Temp setpoint 0 5 K Heating rel start automatically ad justed to Minimum room temp Temp setpoint Minimum room temp is set to a value high er than Temp setpoint Heating rel start and less...

Страница 35: ...erature regulation Select one of two temperature regulation methods Supply air temperature regulation Room temperature regulation temperature regulated until the desired level is reached Temperature r...

Страница 36: ...sory Compensation Compensation Each form of regulation provides different options for set point compensation See the next sections General Compensation of the airflow and temperature is carried out by...

Страница 37: ...SPARE MIO CO2 BMS must be mounted to allow selection of CO2 compensation of the airflow Connection of the sensor is described in the additional instructions accompanying the sensor Function When the c...

Страница 38: ...regulation method 8 is selected Selecting humidity compensation Activate in Menu 3 1 2 2 Example Air humidity level is Airflow A less than Start is the same as set value B between Start and Maximum i...

Страница 39: ...ance can occur in the airflows as only the supply airflow is reduced while the extract airflow is maintained at the required level CO2 and RH sensors are overridden by this function Menu 3 1 2 4 Outdo...

Страница 40: ...s Temp reg Supply air Selecting outdoor air temperature compensation Activate in Menu 3 1 3 1 Outdoor air com pensation Outdoor air compensation aims to compensate for the energy that a building ei th...

Страница 41: ...ven when people are wearing summer clothing If summertime compensation is required select values as indicated below Example Room temperature is Action Too cold when outdoor air tempera ture high Temp...

Страница 42: ...elapse before an alarm for changing the outdoor air and extract air filters is signalled The factory setting is 100 days NB When the warning is set to the same number of days as the Alarm the system w...

Страница 43: ...xtract air temperature must be higher than the set point Conditions not met If the above conditions are not met at the Start time the control system will per form a test run once an hour until an hour...

Страница 44: ...ature cannot be met night time cooling stops 10 C T max Setting for temperature difference be tween outdoor air and extract air when the unit operates with 100 fan speed 6K T min Setting for temperatu...

Страница 45: ...when the temperature difference between the room temperature and outdoor air temperature is 1K below the configured start limit Operation with CCW MXCU MXHP or MCOCW Recommended that cold recovery is...

Страница 46: ...user menu the temperature will never exceed the value set in this menu Room temperature limits Setting Go to menu NB Lowest permitted room tempera ture 3 1 8 Range 10 0 34 0 C Highest permitted room...

Страница 47: ...Time and weekly plan Date and time Weekly plan 5 2 Weekly plan Plan type Change 5 2 5 2 2 Change Weekday Weekend 5 2 2 1 Weekday 1 IAQ level 1 Time of day 2 IAQ level 2 Time of day 3 IAQ level 3 Time...

Страница 48: ...oper ating mode must meet regulatory standards Go to menu 7 1 and select mode Operating mode Fans LSF LSA LS ALC 1 factory set ting Supply air and extract air stopped Closed Closed Closed 2 Supply air...

Страница 49: ...Selection of return water tem perature setting at which air flow is reduced Select the temperature rela tive to the stop temperature T which will generate a frost damage warning and re duce airflow Nu...

Страница 50: ...the nor mal operating level Remains below the con stant heating temperature 0 5 min After 5 minutes the MVM valve will close and the CP will stop The alarm must be reset manually in menu 4 MVM valve...

Страница 51: ...air VEX Supply air CU Room sensor Heating coil Cooling unit 21 3 11 2 15 7 0 0 18 5 0 0 0 0 c c c c c c c 2 1 1 Setp regulators Room Heat recovery Cooling unit Heating unit Compensation Outdoor temp...

Страница 52: ...sations active inactive Menu 2 2 Airflows 2 2 Airflows Supply air Supply air Extract air Extract air 3150l s 11340m h 3225l s 11610m h The menu shows the airflows converted to airflows at 20 C specifi...

Страница 53: ...in exhaust duct current pressure readings for ALC Menu 2 6 Heating coil NB The menu displays depend on whether a water heating coil or an electric heating coil is installed as a heating unit see Menu...

Страница 54: ...cooling unit 2 9 CU cooling unit Comp gas temp Comp gas pressure Evaporator temp Reduction Blocked start 0 0 0 0 0 0 0 0 Aktive C bar C The menu shows refrigerant temperature refrigerant pressure evap...

Страница 55: ...level Humidity level air humidity Menu 6 Versions 6 Versions PO Number Hardware Software About EXact 1234567 Menu 6 1 PO num ber The menu shows the production order number for the VEX CX unit Menu 6...

Страница 56: ...is operating to a weekly plan when servicing begins there is a risk that the program may change via a timer operation and re start the VEX unit 21 0 C 29 05 2009 14 32 Log onto technician menu using...

Страница 57: ...connection board Refer to the section on the terminal board in the Electri cal Installation Guide Auxiliary service panel If the HMI panel is located far from the VEX CX it is recommended that an auxi...

Страница 58: ...eading for filter pressure loss during operation Menu 8 3 Forced start Conditions for use To use the forced start menu the unit must be set to OFF in the user menu Venti lation NB When Menu 8 3 Forced...

Страница 59: ...ectric heating coil dropping out due to an overheating alarm when the electric heating coil is stopped Do not exit the menu or stop the supply air fan until Run on is shown as No 8 3 3 Heating unit HC...

Страница 60: ...d on and off Menu 8 4 Calibrating MPT NB The pressure transducers MPT may only be calibrated when the unit is stopped The doors should be opened to equalise pressure with the surroundings and to ensur...

Страница 61: ...s can be seen in the current list of alarms in Menu 4 5 5 2 Reset alarms Alarm causes must be found An alarm can be reset once the cause has been remedied Menu 4 All alarms may be reset by selecting r...

Страница 62: ...ch individual alarm is shown for two seconds on a rotation basis nn alarm no out of total number nn of alarms XXYYZ see definition for alarm number Category Category Z Alarm level Effect on operation...

Страница 63: ...fault call service 00 03 1 A watchdog rebooted control Unknown fault call service 00 04 1 Software rebooted con trol The software has rebooted the control system 00 05 1 User rebooted control The user...

Страница 64: ...1 01 07 4 Frequency converter power supply to mo tor s has lost a phase Check the cable between frequency converter 1 and motor Check for a short circuit in the motor windings 01 08 4 Frequency conver...

Страница 65: ...1 Simplified diagrams for the location of dampers sen sors air directions etc xx yy z 01 15 4 Frequency converter hardware fault Fault on frequency converter 1 01 16 4 Frequency converter software ve...

Страница 66: ...2 02 07 4 Frequency converter power supply to mo tor s has lost a phase Check the cable between frequency converter 2 and motor Check for a short circuit in the motor windings 02 08 4 Frequency conve...

Страница 67: ...rotate easily Check for defective rotor guard 03 02 3 Low voltage alarm Check for rotor control low voltage at the supply terminals in the control system box 03 03 3 Overvoltage alarm Check for rotor...

Страница 68: ...EX CX to OFF in the user menu and open the doors Next calibrate the MPT in menu 8 4 Pressure transmitter 2 Unit Fault code Category Alarm description Troubleshooting See appendix 1 Simplified diagrams...

Страница 69: ...brated Set the VEX CX to OFF in the user menu and open the doors Next calibrate the MPT in menu 8 4 Pressure transmitter 4 Unit Fault code Category Alarm description Troubleshooting See appendix 1 Sim...

Страница 70: ...EX CX to OFF in the user menu and open the doors Next calibrate the MPT in menu 8 4 Pressure transmitter 6 Unit Fault code Category Alarm description Troubleshooting See appendix 1 Simplified diagrams...

Страница 71: ...ration fault Re calibrate If the problem continues MPT7 must be replaced 10 03 1 Calibrate pressure transmitter Calibrate MPT7 10 04 1 Pressure transmitter using old calibration values When the unit s...

Страница 72: ...n value it should be replaced 11 05 4 TE21 Outdoor air duct tem perature sensor dis connected TE21 Check the sensor s resistance complies with the actual tem perature See temperature resistance table...

Страница 73: ...replaced 11 13 4 TE RPT X External temperature sensor on return water pipe from water heat ing cool has been dis connected TE RPT X Check the sensor s resistance complies with the actual tem perature...

Страница 74: ...building emergency procedure Fire thermostat triggered when there is no fire The closed circuit is broken Find out why the fire detection unit has broken the circuit If no unit is connected check jump...

Страница 75: ...5l s HCE250 240l s HCE260 480l s HCE270 750l s HCE280 1 260 l s Note The electric heating coil must be manually reset before the alarm can be reset in the control panel 14 07 1 Electrical heating coil...

Страница 76: ...F in the user menu and force start the motor valve and circulation pump in specialist menu 8 3 The alarm resets automatically when the temperature rises above the heat retention level 14 12 3 Return w...

Страница 77: ...supply is functioning check if the motor valve opens and the circulation pump is running Check by turning the unit to OFF in the user menu and force start the motor valve and circulation pump in speci...

Страница 78: ...sensor on wa ter heating coil discon nected Check the sensor s resistance complies with the actual tem perature See temperature resistance table appendix 2 If the sensor resistance has significantly...

Страница 79: ...for max 60 minutes 16 07 1 HC Heat control safety functions overridden lo cally due to service HC Heat control temporarily controlled by Lodam Multi Tool Over ride lasts for max 60 minutes 16 10 1 HC...

Страница 80: ...uct has been too high for last 30 minutes The unit has provided an airflow pressure that is 25 above the setpoint for more than 30 minutes Check the fan speed settings in indoor air quality level and...

Страница 81: ...sensor Device Fault code Category Alarm description Troubleshooting See appendix 1 Simplified diagrams for the positioning of dampers sensors air directions etc xx yy z 21 01 2 No modbus communi catio...

Страница 82: ...rature sensor short circuited Check the sensor s resistance complies with the actual tem perature See temperature resistance table appendix 2 If the sensor resistance has significantly changed in valu...

Страница 83: ...n to PIR module Check the modbus cable between the connection board EX act main board EXact2 and PIR module Check the modbus cable from the MCCW module to the other units for faulty wiring Check the D...

Страница 84: ...must be the following min airflows across the cooling unit CU240 195l s CU250 417l s CU260 528l s CU270 611l s Check VEX regulating valve function Check volume of the unit 25 04 3 Cooling unit stopped...

Страница 85: ...connection board and the MCUC module Check the modbus cable from the MCUC module to the other units for faulty wiring External cooling unit MXCU sensor Unit Fault code Category Alarm description Troub...

Страница 86: ...functions overridden lo cally due to service Cooling control temporarily controlled by Lodam Multi Tool Over ride lasts for max 60 minutes 28 13 4 Cooling control detec ted which was not se lected in...

Страница 87: ...tem perature See temperature resistance table appendix 2 If the sensor resistance has significantly changed in value it should be replaced 30 05 4 Supply water pipe tem perature sensor on wa ter cool...

Страница 88: ...configured for the cooling unit 31 14 4 Cooling control config ured incorrectly in con nection with the selec ted VEX CX configura tion Check jumper in CN6 connector on cooling control circuit board T...

Страница 89: ...MIO module Check the modbus cable from the MIO module to the other units for faulty wiring Check the DIP switch settings in the MIO module refer to MIO module instructions 35 02 3 No modbus communi ca...

Страница 90: ...er power mod ule has risen above 120 C Check if the temperature at EC controller 1 exceeded the per mitted 35 C when the alarm was tripped If the temperature has been too high the unit will restart wh...

Страница 91: ...er power mod ule has risen above 120 C Check if the temperature at EC controller 2 exceeded the per mitted 35 C when the alarm was tripped If the temperature has been too high the unit will restart wh...

Страница 92: ...n configured Configure the VEX CX size in menu 3 3 40 03 4 VEX orientation has not been configured Configure orientation in menu 3 3 Dining solution Unit Fault code Category Alarm description Troubles...

Страница 93: ...e resistance table appendix 2 If the sensor resistance has significantly changed in value it should be replaced 43 05 3 Pressure gas tempera ture sensor has short circuited Check the sensor s resistan...

Страница 94: ...sure is low The unit is running in reduced mode 44 03 2 Pressure gas pressure is high The unit is running in reduced mode 44 10 2 Reduced operation of CH cooling unit due to low flow temperature to CC...

Страница 95: ...larm description Troubleshooting See appendix 1 Simplified diagrams for the positioning of dampers sensors air directions etc xx yy z 46 01 1 Module configured in correctly Check CN6 on circuit board...

Страница 96: ...ulation pump in specialist menu 8 3 The alarm resets automatically when the temperature rises above the heat retention level 47 10 3 Return water temp too low Frost protection activated VEX CX tempora...

Страница 97: ...W Check that the hot water supply to the heating coil is function ing If the hot water supply is functioning check if the motor valve opens and the circulation pump is running Check by turning the uni...

Страница 98: ...perature See temperature resistance table appendix 2 If the sensor resistance has significantly changed in value it should be replaced 48 07 4 Return water pipe tem perature sensor on wa ter heating...

Страница 99: ...ax 60 minutes 49 11 2 Heating has been blocked due to cold water in the feed pipe EXact has detected a heating requirement but via TE SPT has registered cold water in the feed pipe Heating is therefor...

Страница 100: ...Unit Fault code Category Alarm description Troubleshooting See appendix 1 Simplified diagrams for the location of dampers sen sors air directions etc xx yy z 54 01 2 Increased rotation leakage Leakage...

Страница 101: ...270L fan placement 1 RD12908GB 03 MC1 MC2 MPT2 MPT1 HC CCW RHX2M 2 2 A Supply air 2 1 A Outdoor air 1 1 A Extract air 1 2 A Exhaust air T heat T Cool TE12 TE21 TE11 TE22 VEX240 250 260 270L fan locati...

Страница 102: ...ract air 1 2 A Exhaust air TE11 TE12 TE21 TE22 MPT2 MPT1 T heat T Cool VEX240 250 260 270R fan placement 2 RD12911GB 03 HC CCW MC2 MC1 RHX2M 2 2 A Supply air 2 1 A Outdoor air 1 1 A Extract air 1 2 A...

Страница 103: ...107 51 3470 26 139904 13 17270 52 3342 25 131670 14 16476 53 3219 24 123972 15 15722 54 3101 23 116772 16 15008 55 2988 22 110035 17 14330 56 2880 21 103727 18 13687 57 2777 20 97820 19 13076 58 2678...

Страница 104: ...21 97 746 0 113 473 2 82 1183 98 724 3 114 460 5 83 1146 99 703 3 115 448 2 84 1110 100 683 1 116 436 3 85 1075 101 633 5 117 424 7 86 1042 102 644 6 118 413 5 87 1010 103 626 3 119 402 7 88 979 4 104...

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